fix(sdk): add runtime-benchmarks and try-runtime features for workspace consistency

The SDK needs runtime-benchmarks and try-runtime features to pass zepter checks
in CI. These features propagate to pallet-transaction-storage but are no-ops
for the SDK itself.

Fixes check-fmt CI failure.

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: mudigal

sdk/rust/Cargo.toml

@@ -69,6 +69,16 @@ ink = [
 # Enable DAG serialization features
 serde-support = ["serde"]
 
+# Runtime benchmarking (no-op for SDK, but required for workspace consistency)
+runtime-benchmarks = [
+    "pallet-transaction-storage/runtime-benchmarks",
+]
+
+# Try-runtime support (no-op for SDK, but required for workspace consistency)
+try-runtime = [
+    "pallet-transaction-storage/try-runtime",
+]
+
 # Note: Examples and integration tests are not included in the repository because they
 # require metadata files from a running Bulletin Chain node and would cause CI failures.
 # Complete example code is available in the SDK book documentation (docs/sdk-book/).